﻿/************************************************************************

   Extended Silverlight Toolkit

   Copyright (C) 2010-2012 Xceed Software Inc.

   This program is provided to you under the terms of the Microsoft Public
   License (Ms-PL) as published at http://extendedsilverlight.codeplex.com/license

   Please purchase a commercial version of this toolkit if you are using
   it in a commercial product. The commercial versions support the project,
   and also include more features for each control, priority support,
   source code, updates, removed watermark, and a proprietary license.

   Visit http://xceed.com and follow @datagrid on Twitter.

  **********************************************************************/

using System.Collections.Generic;
using System.Windows;

namespace Xceed.Silverlight.DataGrid
{
  internal class EmptyLayout : ILayout
  {
    public static readonly EmptyLayout Instance = new EmptyLayout();

    private EmptyLayout() { }

    public IEnumerable<ILayoutElement> Elements
    {
      get { return new ILayoutElement[ 0 ]; }
    }

    public Size DesiredSize
    {
      get
      {
        return new Size( 0, 0 );
      }
    }

    public Size MeasurePanel( Size availableSize )
    {
      return new Size( 0, 0 );
    }

    public Size ArrangePanel( Size finalSize, LayoutParameters parameters )
    {
      return new Size( 0, 0 );
    }

    public void SetViewportPosition( ViewportPosition position )
    {
    }

    public ViewportInfo GetViewportInfo( Rect viewportRect )
    {
      return new ViewportInfo();
    }
  }
}
